ELectric circuits Flashcards
1
Q
Define current
A
The rate of flow of charge.
2
Q
How do you calculate total resistance in series?
A
RT = R1 + R2 + R3
3
Q
How do you calculate total resistance in parallel?
A
1/RT = 1/R1 + 1/R2 + 1/R3
4
Q
What does a I-V graph look like for ohmic conductors?
A
Straight line from origin
5
Q
What does a I-V graph look like for filament bulbs?
A
‘S’ shape
6
Q
What does a I-V graph look like for thermistors?
A
Flipped ‘S’ curve shape - exponential
7
Q
What does a I-V graph look like for diodes?
A
Reverse ‘L’ shape
8
Q
What does a I-V graph look like for resistors?
A
Straight line through the origin
9
Q
Define electromotive force (e.m.f)?
A
The amount of energy supplied by a source to 1C of charge.
